FRENCH CAMP, Calif. (AP) — Authorities in California say a 16-year-old boy who escaped from a county juvenile justice facility this summer and died a few hours later had a severe allergic reaction to pollen.

The Stockton Record reported Monday (http://bit.ly/1dhIijP) that an autopsy found Tracy Ja’mare Brown Jr.’s death stemmed from an “acute type 1 hypersensitivity reaction.”

Brown and another boy escaped in June past the fence of Camp Peterson near Stockton.

The two ran into a field of wild rye grass, oak white, Russian thistle and other plants, where Brown collapsed. He later died at a hospital.